. >> more about tpm and joshua marshall sunday night 8:00 p.m.astern and pacific on "q&a." >> what i started the book, i thought it must be an american story, a country that were shown some -- warships self religion. it turns out that we're lagging when it comes to living alone. it is much more common in european nations, especially in scandinavia and japan. >> in "going solo," the growing trend of american adults choosing to live alone. saturday night at 10:00 p.m. eastern. sunday at 3:00, the second cousin of former secretary of state condoleezza rice on her work to reduce gang violence and starting a dialogue between gang leaders and police. hergetown university's on book and play, "revenge of the women's studies professor." host: it is time for our friday segment, america by the numbers. we're going to focus on how the government measures inflation and how the numbers are used to set important policy decisions such as the cost of living adjustment for social security. often when we get into discussions like this, we hear from you than you do